diff --git a/cmd/ffmpeg/ffmpeg.go b/cmd/ffmpeg/ffmpeg.go
index 1489bb84..cbd795ec 100644
--- a/cmd/ffmpeg/ffmpeg.go
+++ b/cmd/ffmpeg/ffmpeg.go
@@ -70,6 +70,10 @@ var defaults = map[string]string{
 	"aac":        "-c:a aac", // keep sample rate and channels
 	"aac/16000":  "-c:a aac -ar:a 16000 -ac:a 1",
 	"mp3":        "-c:a libmp3lame -q:a 8",
+	"pcm":        "-c:a pcm_s16be",
+	"pcm/8000":   "-c:a pcm_s16be -ar:a 8000 -ac:a 1",
+	"pcm/16000":  "-c:a pcm_s16be -ar:a 16000 -ac:a 1",
+	"pcm/48000":  "-c:a pcm_s16be -ar:a 48000 -ac:a 1",
 
 	// hardware Intel and AMD on Linux
 	// better not to set `-async_depth:v 1` like for QSV, because framedrops
diff --git a/pkg/core/core.go b/pkg/core/core.go
index 9e6fbb98..1a429d98 100644
--- a/pkg/core/core.go
+++ b/pkg/core/core.go
@@ -25,6 +25,7 @@ const (
 	CodecOpus = "OPUS" // payloadType: 111
 	CodecG722 = "G722"
 	CodecMP3  = "MPA" // payload: 14, aka MPEG-1 Layer III
+	CodecPCM  = "L16" // Linear PCM
 
 	CodecELD = "ELD" // AAC-ELD